fixes headercheck

dune/gdt/assembler/system.hh

@@ -9,6 +9,7 @@
 #include <type_traits>
 #include <memory>
 
+#include <dune/common/version.hh>
 #if DUNE_VERSION_NEWER(DUNE_COMMON, 3, 9) //&& HAVE_TBB //EXADUNE
 #include <dune/grid/utility/partitioning/seedlist.hh>
 #endif

dune/gdt/assembler/tmp-storage.hh

@@ -7,6 +7,7 @@
 #define DUNE_GDT_ASSEMBLER_TMP_STORAGE_HH
 
 #include <dune/stuff/common/tmp-storage.hh>
+#include <dune/stuff/aliases.hh>
 
 namespace Dune {
 namespace GDT {